composer_scene.lua

local composer = require( "composer" )
local scene = composer.newScene()

-- include Corona's "physics" library
local physics = require "physics"

function scene:create( event )
	-- Called when the scene's view does not exist.
	-- 
	-- INSERT code here to initialize the scene
	-- e.g. add display objects to 'sceneGroup', add touch listeners, etc.

	local sceneGroup = self.view

end


function scene:show( event )
	local sceneGroup = self.view
	local phase = event.phase
	
	if phase == "will" then
		-- Called when the scene is still off screen and is about to move on screen
	elseif phase == "did" then
		-- Called when the scene is now on screen
		-- 
		-- INSERT code here to make the scene come alive
		-- e.g. start timers, begin animation, play audio, etc.
		physics.start()
	end
end

function scene:hide( event )
	local sceneGroup = self.view
	local phase = event.phase
	
	if event.phase == "will" then
		-- Called when the scene is on screen and is about to move off screen
		--
		-- INSERT code here to pause the scene
		-- e.g. stop timers, stop animation, unload sounds, etc.)
		physics.stop()
	elseif phase == "did" then
		-- Called when the scene is now off screen
	end	
	
end

function scene:destroy( event )
	-- Called prior to the removal of scene's "view" (sceneGroup)
	-- 
	-- INSERT code here to cleanup the scene
	-- e.g. remove display objects, remove touch listeners, save state, etc.
	local sceneGroup = self.view
	package.loaded[physics] = nil
	physics = nil
end


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-- Listener setup
scene:addEventListener( "create", scene )
scene:addEventListener( "show", scene )
scene:addEventListener( "hide", scene )
scene:addEventListener( "destroy", scene )

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return scene